SQL從所有數據庫的所有表中獲取最大id值

Question

我想從所有數據庫中的所有表中獲取數據庫名稱，模式名稱，表名和最大id值。使用下面的查詢，我得到DBname，Schema和TableName，但無法弄清楚如何將max（id）值也放入表中。

DECLARE @DBName VARCHAR(256) 
DECLARE @varSQL VARCHAR(256) 
DECLARE @getDBName CURSOR 
SET @getDBName = CURSOR FOR SELECT name FROM sys.databases 
CREATE TABLE #TmpTable (
         DBName VARCHAR(256), 
         SchemaName VARCHAR(256), 
         TableName VARCHAR(256) 
         ) 
OPEN @getDBName 
    FETCH NEXT FROM @getDBName INTO @DBName 
    WHILE @@FETCH_STATUS = 0 
     BEGIN 

      SET @varSQL = 'USE ' + @DBName + '; 
      INSERT INTO #TmpTable 
      SELECT '''+ @DBName + ''' AS DBName, 
      SCHEMA_NAME(schema_id) AS SchemaName, 
      name AS TableName 
      FROM sys.tables' 

      EXEC(@varSQL) 

      FETCH NEXT FROM @getDBName INTO @DBName 
     END 
CLOSE @getDBName 

DEALLOCATE @getDBName 
SELECT * FROM #TmpTable 
DROP TABLE #TmpTable 

Answer 1

SELECT 
    '@DBName' AS DBName, 
     IDENT_CURRENT(Name) MaxId, 
     SCHEMA_NAME(Schema_ID) AS SchemaName, 
     name AS TableName 
FROM sys.Tables